A sintering and carbon-resistant Ni-SBA-15 catalyst prepared by solid-state grinding method for dry reforming of methane

Zhang, Qiulin; Zhang, Tengfei; Shi, Yuzhen; Zhao, Bin; Wang, Mingzhi; Liu, Qixian; Wang, Jing; Long, Kaixian; Duan, Yankang; Ning, Ping

doi:10.1016/j.jcou.2016.11.002

Cited by 133 publications

(57 citation statements)

References 55 publications

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“…This highlighted the importance of developing highly dispersed small Ni nanoparticles (<5 nm) which possessing high resistance of carbon formation. This is in line with numerous experimental results previously performed by many researchers, indicating that the carbon formation on Ni surface during DRM reaction can be minimized by reducing the size of Ni particles [37,38,63,64].…”

Section: Enhancement Of Dispersion and Thermal Stability Of Ni Nanopasupporting

confidence: 92%

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Recent Scientific Progress on Developing Supported Ni Catalysts for Dry (CO2) Reforming of Methane

Seo

2018

Catalysts

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Two major green house gases (CO 2 and CH 4 ) can be converted into useful synthetic gas (H 2 and CO) during dry reforming of methane (DRM) reaction, and a lot of scientific efforts has been made to develop efficient catalysts for dry reforming of methane (DRM). Noble metal-based catalysts can effectively assist DRM reaction, however they are not economically viable. Alternatively, non-noble based catalysts have been studied so far, and supported Ni catalysts have been considered as a promising candidate for DRM catalyst. Main drawback of Ni catalysts is its catalytic instability under operating conditions of DRM (>700 • C). Recently, it has been demonstrated that the appropriate choice of metal-oxide supports can address this issue since the chemical and physical of metal-oxide supports can prevent coke formation and stabilize the small Ni nanoparticles under harsh conditions of DRM operation. This mini-review covers the recent scientific findings on the development of supported Ni catalysts for DRM reaction, including the synthetic methods of supported Ni nanoparticles with high sintering resistance.

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Section: Enhancement Of Dispersion and Thermal Stability Of Ni Nanopasupporting

confidence: 92%

“…Many scientific results pointed that the size of Ni nanoparticles need to be below at least 8 nm to exhibit high resistance towards carbon formation [37,38,63,64]. However, those small Ni nanoparticles are prone to forming larger particles by the aggregation at high temperature (>700 • C).…”

Section: Enhancement Of Dispersion and Thermal Stability Of Ni Nanopamentioning

confidence: 99%

Recent Scientific Progress on Developing Supported Ni Catalysts for Dry (CO2) Reforming of Methane

Seo

2018

Catalysts

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“…Ni-based catalysts, due to good catalytic activity and low cost, have been widely investigated for the DRM reaction [8][9][10]. However, Ni-based catalysts are prone to carbon deposition and metal sintering during DRM [11,12]. Designing a DRM catalyst that resists against carbon deposition and metal sintering could be accomplished by making appropriate choice of support, promoter, structure, and methods of preparation [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Encapsulated Ni@La2O3/SiO2 Catalyst with a One-Pot Method for the Dry Reforming of Methane

Wang

Liu

et al. 2019

Catalysts

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Ni nanoparticles encapsulated within La 2 O 3 porous system (Ni@La 2 O 3 ), the latter supported on SiO 2 (Ni@La 2 O 3 )/SiO 2 ), effectively inhibit carbon deposition for the dry reforming of methane. In this study, Ni@La 2 O 3 /SiO 2 catalyst was prepared using a one-pot colloidal solution combustion method. Catalyst characterization demonstrates that the amorphous La 2 O 3 layer was coated on SiO 2 , and small Ni nanoparticles were encapsulated within the layer of amorphous La 2 O 3 . During 50 h of dry reforming of methane at 700 • C and using a weight hourly space velocity (WHSV) of 120,000 mL g cat −1 h −1 , the CH 4 conversion obtained was maintained at 80%, which is near the equilibrium value, while that of impregnated Ni-La 2 O 3 /SiO 2 catalyst decreased from 63% to 49%. The Ni@La 2 O 3 /SiO 2 catalyst exhibited very good resistance to carbon deposition, and only 1.6 wt% carbon was formed on the Ni@La 2 O 3 /SiO 2 catalyst after 50 h of reaction, far lower than that of 11.5 wt% deposited on the Ni-La 2 O 3 /SiO 2 catalyst. This was mainly attributed to the encapsulated Ni nanoparticles in the amorphous La 2 O 3 layer. In addition, after reaction at 700 • C for 80 h with a high WHSV of 600,000 mL g cat −1 h −1 , the Ni@La 2 O 3 /SiO 2 catalyst exhibited high CH 4 conversion rate, ca. 10.10 mmol g Ni −1 s −1 . These findings outline a simple synthesis method to prepare supported encapsulated Ni within a metal oxide porous structure catalyst for the dry reforming of methane reaction.

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“…A large number of studies have shown that Ni-based catalysts can result in high activity and stability in DRM [18][19][20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Effect of low loading of yttrium on Ni-based layered double hydroxides in CO2 reforming of CH4

Świrk

Motak

Grzybek

et al. 2018

Reac Kinet Mech Cat

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Ni/Al/Mg layered double hydroxides (LDHs) modified with low loading of yttrium (0.2 and 0.4 wt%) were used in dry reforming of methane at 700 °C. Physicochemical characterization, such as: X-ray fluorescence, N2 sorption, X-ray diffraction, temperature programmed reduction in H2, temperature programmed desorption of CO2, H2 chemisorption, thermogravimetry analysis coupled by mass spectrometry and Raman spectroscopy, showed that the introduction of low loadings of yttrium lead to a smaller Niº crystallite size, a decrease in reducibility of the nickel, and a decreased number of basic sites in the modified Ni/LDHs catalysts. The doping with 0.4 wt% of Y improves catalytic activity resulting in higher CH4 and CO2 conversions at 700 °C, i.e. ca. 84 % and ca. 87 %, respectively with no clear deactivation observed after 5 h run. The increase in CO2 conversion and a decrease of H2/CO ratio indicates that side reactions occurs during DRM.

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A sintering and carbon-resistant Ni-SBA-15 catalyst prepared by solid-state grinding method for dry reforming of methane

Cited by 133 publications

References 55 publications

Recent Scientific Progress on Developing Supported Ni Catalysts for Dry (CO2) Reforming of Methane

Recent Scientific Progress on Developing Supported Ni Catalysts for Dry (CO2) Reforming of Methane

Encapsulated Ni@La2O3/SiO2 Catalyst with a One-Pot Method for the Dry Reforming of Methane

Effect of low loading of yttrium on Ni-based layered double hydroxides in CO2 reforming of CH4

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